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Thread: I/O error, dev sr1, sector 765768

  1. #1
    Join Date
    Sep 2007
    Beans
    51
    Distro
    Ubuntu 11.04 Natty Narwhal

    Unhappy I/O error, dev sr1, sector 765768

    I'm a WinXP SP2 user and have recently installed Ubuntu 8.10 as a dual boot option on my computer. The first few days went fine but then I started getting the following messages while booting into Ubuntu :

    sr 3:0:0:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
    sr 3:0:0:0: [sr1] Sense Key : Medium Error [current]
    sr 3:0:0:0: [sr1] Add. Sense: L-EC uncorrectable error
    end_request: I/O error, dev sr1, sector 765768
    Buffer I/O error on device sr1, logical block 191442
    This block repeated multiple times. On trying Ubuntu recovery mode the boot process went through such blocks many times before finally booting. As a noob I couldn't work out what was happening nor could I find any solution here, so I reinstalled Ubuntu. End result - same ! Fine for two days and now the same problem. Any advice would be appreciated. (Please bear in mind that I'm an Ubuntu newbie!)

  2. #2
    Join Date
    Feb 2007
    Location
    Topeka, Kansas
    Beans
    2,317
    Distro
    Ubuntu 13.10 Saucy Salamander

    Re: I/O error, dev sr1, sector 765768

    How many CD/DVD drives do you have?

  3. #3
    Join Date
    Sep 2007
    Beans
    51
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: I/O error, dev sr1, sector 765768

    Quote Originally Posted by diablo75 View Post
    How many CD/DVD drives do you have?
    Two - one CD-RW, and one DVD-RW.
    As a further piece of information, I have now discovered that this problem seems to occur when there is any CD in the drive(s) at the time of booting. Booting seems to proceed without a problem when there is no CD inserted.

  4. #4
    Join Date
    Feb 2007
    Location
    Topeka, Kansas
    Beans
    2,317
    Distro
    Ubuntu 13.10 Saucy Salamander

    Re: I/O error, dev sr1, sector 765768

    It sounds like you've found a work-around to the problem. I'm curious if you were to put a CD into the other drive if the problem comes back.

  5. #5
    Join Date
    Jan 2007
    Beans
    Hidden!

    Re: I/O error, dev sr1, sector 765768

    Hi,

    I also get this with a CD left in the drive at boot. Though my error message is slightly different but i think that is because it is a AudioCD.

    [11444.743960] sr 0:0:1:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
    [11444.743967] sr 0:0:1:0: [sr1] Sense Key : Illegal Request [current]
    [11444.743973] sr 0:0:1:0: [sr1] Add. Sense: Illegal mode for this track
    [11444.743980] sr 0:0:1:0: [sr1] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00
    [11444.743991] end_request: I/O error, dev sr1, sector 0

    On the plus it seems this error isn't limited to Ubuntu, Gentoo forums have topics on it too.

    Craig

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